From f9b90e39cbc5c4d6ef60022fd1f25d541df0aad1 Mon Sep 17 00:00:00 2001
From: Vernon Sauder <vernoninhand@gmail.com>
Date: Wed, 15 Oct 2008 22:02:40 -0700
Subject: [PATCH] spi: simplify spi_write_then_read()

Modify spi_write_then_read() to use one transfer.  This speeds up all
callers, and is a minor code shrink.

Signed-off-by: Vernon Sauder <Vernon.Sauder@gmail.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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